|
|
|
|
|
Giffard Mena, I; Lorin Nebel, C; Charmantier, G; Castille, R; Boulo, Viviane. |
Sea-bass (Dicentrarchus labrax) grow under different salinity regimes, from the open sea to lagoons and even rivers, but some mortality has been recorded in juvenile stages when exposed to low salinity water. Changes in water permeability of different osmoregulatory tissues could be the cause of reduction in blood osmotic pressure and death in some fish in fresh water (FW). In order to explore this condition, we have studied the changes of aquaporins (AQP1 and AQP3), alpha 1 and alpha 4 Na+/K(+-)ATPase transcript levels in the digestive tract, kidney and gills after a long-term exposure of juvenile sea-bass to sea water (SW) and FW fish able to survive in SW and FW are called SW-adapted fish (SWS), FW successfully-adapted fish (FWS) respectively, while... |
Tipo: Text |
Palavras-chave: Salinity adaptation; Juvenile sea bass; Differential mortality; Alpha 4 Na+/K+ ATPase; Alpha l Na+/K+ ATPase; AQP3; AQP1. |
Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4656.pdf |
| |
|
|
Silberstein,C.; Kierbel,A.; Amodeo,G.; Zotta,E.; Bigi,F.; Berkowski,D.; Ibarra,C.. |
Water channels or aquaporins (AQPs) have been identified in a large variety of tissues. Nevertheless, their role in the human gastrointestinal tract, where their action is essential for the reabsorption and secretion of water and electrolytes, is still unclear. The purpose of the present study was to investigate the structure and function of water channels expressed in the human colon. A cDNA fragment of about 420 bp with a 98% identity to human AQP3 was amplified from human stomach, small intestine and colon by reverse transcription polymerase chain reaction (RT-PCR) and a transcript of 2.2 kb was expressed more abundantly in colon than in jejunum, ileum and stomach as indicated by Northern blots. Expression of mRNA from the colon of adults and children... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Absorptive epithelium; Human colon; Water channels; Aquaporins; AQP3. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000018 |
| |
|
|
|